Sand consolidation methods using adsorbable catalysts
Methods are provided for selectively consolidating sand grains within a subterranean formation. First an acidic zirconium salt catalyst, such as ZrOCl/sub 2/, Zr(SO/sub 4/)/sub 2/, or ZrCl/sub 4/, is injected into the subterranean formation, wherein the acidic salt catalyst is adsorbed to the surface of the sand grains. Next a polymerizable resin composition such as furfuryl alcohol oligomer is introduced into the well formation. Polymerization of the resin occurs upon exposure to the elevated well temperatures and contact with the acid salt catalyst adsorbed to the sand grains. The polymerized resin serves to consolidate the surfaces of the sand grains while retaining permeability through the pore spaces. An ester of a weak organic acid is included with the resin compositions to control the extent of a polymerization by consuming the water by-product formed during the polymerization reaction.
- Assignee:
- Getty Oil Company
- Patent Number(s):
- US 4512407
- OSTI ID:
- 5251823
- Resource Relation:
- Patent File Date: Filed date 15 Dec 1983; Other Information: PAT-APPL-561970
- Country of Publication:
- United States
- Language:
- English
Similar Records
Sand consolidation methods
Sand consolidation methods
Related Subjects
03 NATURAL GAS
CATALYSTS
CHEMICAL COMPOSITION
NATURAL GAS WELLS
SAND CONSOLIDATION
OIL WELLS
OXYCHLORIDES
PERMEABILITY
POLYMERIZATION
RESINS
WELL COMPLETION
WELL TEMPERATURE
ZIRCONIUM CHLORIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM SULFATES
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
RESERVOIR TEMPERATURE
SULFATES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
WELLS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing